These bottles are 36 oz and made from stainless steel. They are double wall vacuum insulated to keep drinks ice cold and are great for hot beverages as well. These bottles are tough with a heavy duty yellow coating that has our original Courage Barbell logo etch in. These come with two lids for your own personal taste and situation. Both come with an air tight heavy duty seal to lock in the cold. One is the three finger wide mouth lid and second is the wide mouth sport top lid with screw cap. Also included are two custom 3 inch stickers. One of our original Courage Barbell logo and one of our courage to train with CA logo.